1. Goddard Planetary Heliophysics Institute; University of Maryland, Baltimore County; Baltimore Maryland USA
2. Heliophysics Science Division; NASA Goddard Space Flight Center; Greenbelt Maryland USA
3. Goddard Planetary Heliophysics Institute; University of Maryland; College Park Maryland USA
4. Department of Climate and Space Sciences and Engineering; University of Michigan; Ann Arbor Michigan USA
5. Geospace Physics Laboratory; NASA Goddard Space Flight Center; Greenbelt Maryland USA
6. Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA